I have most of these (all the spell decks at least) and I love them. They make preparing and referencing so much easier. I'm not the only one at our table that has bought them either.

Dungeon Master Cards(GaleForce 9)
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I'm eyeing these up as well, but very much on the fence, as I'm unsure if their usefulness will be to same degree as the spellbook cards.

Ravenloft(GaleForce 9)

Tarokka Deck

This deck wan't originally on my radar for purchase as I don't play in Ravenloft, however, I've been thinking about grabbing it for use as an event/situation randomizer. I think could be a lot of fun. It would certainly be useful in a game run in Karameikos too.

I have this game too. It is a great game but it isn't easy. You have to understand going in that this is not an RPG style game, it is a fantasy themed tactical puzzle game with campaign elements. Only played solo, and likely only to be played solo, though I purchased it with that intent.

I have this game too. It is a great game but it isn't easy. You have to understand going in that this is not an RPG style game, it is a fantasy themed tactical puzzle game with campaign elements. Only played solo, and likely only to be played solo, though I purchased it with that intent.

I really don't think so, to be honest. The cards are firmly based on D&D, and in fact use published 5E art. I guess that means you could use the cards to show players an illustration of the monster without them seeing any D&D stats.

There are no mechanical similarities at all. The game 'converts' the D&D flavour to its own system.